fix(b-card): handle `header-html` and `footer-html` props correctly (fixes #5038) (#5039)
fix(b-card): handle `header-html` and `footer-html` props correctly (fixes #5038) (#5039)

Fixes #5038

Co-authored-by: Jacob Müller <7ae9a40946a993a46e3f1d4a8ac589d2efe9da89@gmail.com>
bootstrap-vue/bootstrap-vue,bootstrap-vue/bootstrap-vue